/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 1998 Nicolas Souchu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef __IIC_H
#define __IIC_H
#include <sys/ioccom.h>
/* Designed to be compatible with linux's struct i2c_msg */
struct iic_msg
{
uint16_t slave;
uint16_t flags;
#define IIC_M_WR 0 /* Fake flag for write */
#define IIC_M_RD 0x0001 /* read vs write */
#define IIC_M_NOSTOP 0x0002 /* do not send a I2C stop after message */
#define IIC_M_NOSTART 0x0004 /* do not send a I2C start before message */
uint16_t len; /* msg length */
uint8_t * buf;
};
struct iiccmd {
u_char slave;
int count;
int last;
char *buf;
};
struct iic_rdwr_data {
struct iic_msg *msgs;
uint32_t nmsgs;
};
#define IIC_RDRW_MAX_MSGS 42
#define I2CSTART _IOW('i', 1, struct iiccmd) /* start condition */
#define I2CSTOP _IO('i', 2) /* stop condition */
#define I2CRSTCARD _IOW('i', 3, struct iiccmd) /* reset the card */
#define I2CWRITE _IOW('i', 4, struct iiccmd) /* send data */
#define I2CREAD _IOW('i', 5, struct iiccmd) /* receive data */
#define I2CRDWR _IOW('i', 6, struct iic_rdwr_data) /* General read/write interface */
#define I2CRPTSTART _IOW('i', 7, struct iiccmd) /* repeated start */
#define I2CSADDR _IOW('i', 8, uint8_t) /* set slave address for future I/O */
#endif
